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5 Functions of the key components
5�1 Stability – the frame
The woom frame is made of lightweight, high-quality aluminium tubing. That gives it the
necessary stability with a minimum weight.
5�2 Front wheel mount and shock absorption – the
fork
The fork connects the front wheel with the frame and serves as the mount for other compo-
nents, such as the stem and the front brake.
5�3 Steering – the handlebars
The position and shape of the handlebars encourage the right riding posture. The handle-
bars are also the mount for the grips and other components (brake levers, gear shifters,
bell, reector, etc.).
5�4 Shock absorption and grip – the tyres
The tyres have to bear the weight of the bike, the rider and any additional load. The greater
the weight, the higher the tyre pressure should be. The permissible pressure range is specied
on the tyre. See also Section 10.1.
5�5 Stopping – the brakes
The woom ORIGINAL has two rim brakes, one on the front wheel and one on the rear wheel.
When braking, the brake pads are pressed against the braking surface of the rim, thus slowing
the wheel. See also Section 8.1.
APPLICABLE ONLY IN THE USA: The woom ORIGINAL 2 has a coaster brake for the rear
wheel. Applying the coaster brake engages the braking mechanism in the rear hub, slowing
the wheel. See also Section 8.1.
5�6 Motion – the chain and the gears
The cranks connect the pedals with the bottom bracket. The chainring attached to the right
crank transfers the power put into the pedals by the rider through the chain to the rear wheel.
That is also where the derailleur is located (except on the ORIGINAL 2, woom ORIGINAL 3, and
woom ORIGINAL 3 AUTOMAGIC). The woom ORIGINAL 3 AUTOMAGIC has automatic 2-speed
internal hub gearing. It shifts automatically depending on the rider's speed. The derailleur
guides and shifts the chain onto a dierent sized sprocket. This changes the gear ratio.
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